Yeah, the line can get a little blurry at times, I'll be the first to admit.
I guess the first and biggest different is intent; the difference between two mindset:
Minmax "I want to make the best Face" vs Optimized "I want to make an elf stripper who grew up as a poor SINless refugee in Tarislar but learned how to lie, manipulate, charm and secude her way out of the slums and now always gets her way"
Minmax "I want to throw the biggest fireball" vs Optimized "My Hermetic mage studies the way magic and the elements affect eachother and does shadowruns as an expert in offensive combat spells. He uses the money for the expensive magical equipment required and being able to test some of the more dangerous magical theories in practice is a nice bonus to him!"
During chargen I frequently find myself having slipped to the min-max side and have to tell myself to think of the character instead of thinking of this and that skill. And then I stop messing with the numbers, look at the charsheet as a whole and notice a hole here and a quirk there that just doesn't belong in an actual credible person and see if I can fix it.
Wow, 5 ninja's jumped past me!
This was an answer to:
An interesting distinction. Where is the line drawn though? When does an optimal build become min-maxed? Not asking you to give a concrete answer, don't want to derail, more just a rhetorical challenge for the two schools of thought.
which now seems a bit obsolete, with stonefur using the same words in a much shorter answer :p
@A4BG: You could be right, I didn't check a dictionary, I was just using the words how I see 'em used most often in the gaming circles I frequent.

Anyhow, in the post(s) I made, Min-Maxing is obviously meant to be interpreted differently than that and from the replies from the other posters it seems they understood my intentions.